Hi im new here, just been on a holiday to see some ww1 battle sites and picked up a helmet from albert basilica museum. I was told it was donated by a private collector and is genuine. I am not 100% certain but after hours of googling it looks like a genuine m16. it clearly has et66 stamped inside.
It it painted camoflague and has a white ring on one side with a machinegun in it, the paint looks very old and faded.